{
	parms {
	}
	state {
		depthfunc GL_ALWAYS
		depthmask
		twosided
	}
	hlsl_vp {
		result.position = vertex.position;
	}
	hlsl_fp {
		// convert from 0,1,2,3,... coordinates to 0.0 - 1.0
		float2 texcoord = screenPosToTexcoord( fragment.position.xy, $positionToViewTexture );

		half4 glareTex = h4tex2D( $glareMap, texcoord.xy );

		// scale for general glare brightness
		glareTex *= $glareScale.x;

		// color normalize and get magnitude
		glareTex.w = max( glareTex.x, glareTex.y );
		glareTex.w = max( glareTex.w, glareTex.z );

		// don't divide by zero
		glareTex.w = max( glareTex.w, 0.0001 );
		glareTex.xyz = glareTex.xyz / glareTex.w;

		// color clamp
		glareTex.w = min( glareTex.w, $glareMax.x );

		result.hcolor = glareTex * glareTex.w;
		result.hcolor.w = 1.0;
	}
}